My key would not work

[Renegade17]

I had just driven for an hour and a half at speeds of 68 to 72 mph. Truck was running fine. No problems. Got out of the gas station to gas up. Put my key in, turned it and nothing. Nothing at all. I hit the horn it worked. I turned down the lights at work. Still nothing when turning the key. I took the key out and turned it 180° and put it back in and it started. Have not had any problems since. Any ideas?
Thanks Bob

 

[SitKneelBend]

I had just driven for an hour and a half at speeds of 68 to 72 mph. Truck was running fine. No problems. Got out of the gas station to gas up. Put my key in, turned it and nothing. Nothing at all. I hit the horn it worked. I turned down the lights at work. Still nothing when turning the key. I took the key out and turned it 180° and put it back in and it started. Have not had any problems since. Any ideas?
Thanks Bob

I'd check for codes. A dying battery can cause this as well as a short on the CANBUS.